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G. W. DAWSON Filter.

No. 234,661. Patented Nov. 23,1880.

IT N S N-FETERS, PHOTO-LITHDGRAPHER. WASHlNGTDN, D C.

Nrren Sterne ATENT amen.

GEORGE IV. DAWVSON, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO EWALD OVER, OF SAME PLACE.

FILTER.

SPECIFICATION forming part of Letters Patent No. 234,661, dated November 23, 1880.

Application filed January 26, 1880.

T all whom it may concern: I

Be it known that I, GEORGE W. DAWSON,

of Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Filter, of which the followingis a specification.

My invention relates to improvements in filterers in which a receptacle containing silex or other filtering material operates in conjunc- [0 tion with a five-way cock; and the objects of my invention are, first, to provide a filtering receptacle with a five-waycock for regulating the direction of the water-in its passage through the filtering-apartment; second, to aftord facilities for reversing the direction of the current of water and discharging the sediment accumulating in the filtering-apartment. I attain these objects by the mechanism illustrated in the accompanying drawings, in which-- Figure 1 is a plan view of the entire apparatus. Fig. 2 is a horizontal section taken at the line 1 y of Fig. 3, and Fig. 3 is a vertical sectional view of the five-way cock taken at the line as m of Fig.2.

Similar letters refer to similar parts throughout the several views.

The receptacle A, for holding the filtering material, may be constructed of any desired form, either from cast-iron pipe or other mate rial; but I prefer the circular form shown, as the most compact. The receptacle A A, as shown, is a hollow ring of metal, open at one side, and provided with radial flanges O, and filled with silex, animal-charcoal, or other suitable filtering material.

The five-way cock is composed of the outer case or shell, B, having radial flanges (J at its sides, adapted to fit between the flanges G of the receptacle A and form water-tight joints, with screens W between them. The outer side of the shell B is provided with a socket, D, for the water-inlet pipe E to be attached thereto, and the inner side of said shell is also provided with socket I, for the discharge-pipe J to be attached.

The ports L and N, leading from the interior of the shell or key socket into each of the sockets D and I, are narrow and long, to perunit the sides of the centerpartition, K, of the key K to shut them off when said key is in the position shown in Fig. 2. The side ports,

0 M, also, are of like construction and lead into the filtering-receptacle A A.

The key K is constructed as showni. 6., it

is tapered and fits in the tapered socket formed in the case B. The lower end is cast solid and provided with an ordinary washer, It, and nut S, for holding the key snuglyin place. Above the lower solid part of the key K the key is formed with two chambers, i i, one on each side, with a partition, K, between them.

' The edges of this partition K are wide enough to close any of the ports L, N, M, or 0, over which it may be moved. The recess t" is closed tightly at the top by the horizontal partition m, which unites with the upper shell part of the key. The other recess, i, is open at the top, forming a communication to the cylindrical receptacle]? of said key, and also with the 0 discharge-pipe H, which is screwed fast into the socket G, which forms the upper end of the key K, as shown more fully in Fig. 3.

The discharge-pipe I-I may extend upward to any desired length, and is provided with 7 5 an ordinary valve (not shown) for closing or opening said pipe. This pipe H also acts as a means for turning the key K in the cock-case B when desired, as will be hereinafter explained.

The discharge-pipe J, which leads out of the socket I, may be provided with an elbow and a pipe, (not shown,) extending upward therefrom at right angles to the pipe J, and said extended pipe may be provided with a cock (also not shown) for drawing off the sediment accumulated in the filtering-apartment A, should it be desired to draw oft said sediment by the pipe J instead of by the pipe H.

Having thus described the construction of my improved filter, I will now describe its mode of operation as follows, to wit:

Assuming that the filtering device, constructed substantially as hereinbefore described, is connected by the pipe E to the 5 water-main, and that the pipe J is also connected with the distributing-rapes, and the chamber A filled with silex or other filtering material, and the key is in the position shown in Fig. 2, then no water can enter or pass through the filtering-chamber A or the filterin g material contained therein; but if the key K be turned so as to adjust the partition K in line with the dotted line f, then the water from the water-main can freely pass through the port L into the recessi of the key, then through the port 0 and screen \V into the filtering material in the receptacle A A; the water then percolates through the filtering material and then the screen W into the port M, thence into the recess 1', and out through the port N into the distributing-pipe J, thus causing any sediment that maybe in the water to be retained in the filtering material, principally at the end of the receptacle A nearest to the port 0, and permitting the filtered water to pass into the distributing-pipe J, as before described.

In order to remove the sediment that is deposited in the filtering material contained in the chamber A of the receptacle A, the key K should be turned by the pipe H until the partition K is in line with the dotted line 'f and the valve (not shown) in the pipe His opened. \Vhile in this position the water from the water-main passes through the port L into the recess 1" of the key, thence through the port M and screen W into and through the filtering material in the chamber A of the receptacle A, and forces the sediment that has accumulated in the filtering material near the port 0 through the screen W and port 0 into the recess dot the key, thence upward through the opening P into the pipe H, where it is dis charged until the water runs clear again; then the valve (not shown) in the pipe H is closed, stopping the flow of water in that direction, and causing the filtered water to again flow into the distributing-pipe J, by means of the recess t and port N, in the reverse direction from that in which it first flowed. The flow of water through the filter in this last-mentioned direction is kept up until the filtering material again needs cleaning, when the same operation for removing the sediment is repeated by turning the partition K of the key in line with the dotted line f, and operates the valve in pipe H, or the sediment in this; or, as in the first case, may be drawn out through the distrilmting-pipe J, either by means of the cock in said pipe (not shown) or by the faucets or cocks at the discharge-points in said distributing-pipe. (Also not shown.)

I am aware that prior to my invention water-filterers have been made in which the sediment has been removed by reversing the direction in which the water passes through the filter. I therefore do not claim such a device, broadly; but

What I do claim as my invention, and desire to secure by Letters Patent, is

1. The combination, in a filtering device, of the filtering-receptacle A A, provided with silex or other filtering material, the screens W W, and the five-way cock, provided with ports L N O M, the inlet-pipe E, distributingpipe J, and sediment-discharge pipe II, all substantially as set forth.

2. In a water-filter, the cock-case B, provided with four ports, L N O M, a supplypipe connection, D, a distributing-pipe connection, I, and connection 0, for a filtering device to be attached to, combined with the key K, provided with a recess, 6, closed at the top and bottom, a recess, 5, closed at the bottom and opening at the top, forming a communication to the chamber P, the partition K, the chamber P, and sediment-discharge pipe H, all substantially as shown, for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribin g witnesses.

GEO. \V. DAWSON. \Vitnesses E. O. FRINK, GEORGE H. BENNETT. 

